diff --git a/src/auth/service.py b/src/auth/service.py
index 8888f85..d68f639 100644
--- a/src/auth/service.py
+++ b/src/auth/service.py
@@ -90,14 +90,17 @@ async def internal_key(request: Request):
         )
         
     try:
+        headers = {
+        'Content-Type': 'application/json'
+        }
         
-        payload = json.dumps({
+        response = requests.post(
+            f"{config.AUTH_SERVICE_API}/sign-in",
+            headers=headers,
+            data=json.dumps({
             "username": "user10",
             "password": "123456"
             })
-        response = requests.post(
-            f"{config.AUTH_SERVICE_API}/sign-in",
-            data=payload
         )
 
         if not response.ok: